Can multiple people use one WhatsApp number with different OpenClaw instances

Yes, via multi‑agent routing. Bind each sender’s WhatsApp DM (peer kind: "dm", sender E.164 like +15551234567) to a different agentId, so each person gets their own workspace and session store. Replies still come from the same WhatsApp account, and DM access control (channels.whatsapp.dmPolicy / channels.whatsapp.allowFrom) is global per WhatsApp account. See Multi-Agent Routing and WhatsApp.